Gibson Girl

Etymology
Introduced in the satirical works of illustrator Charles Dana Gibson in the 1890s.

So called from its hourglass shape (allowing it to be held between one's legs while the generator handle was turned), supposed to resemble a womanly figure.

Noun

 * 1) A personification of American ideal feminine beauty around the beginning of the 20th century, depicted as voluptuous but ladylike and fashionable.
 * 2)  A survival radio transmitter carried by aircraft on over-water operations.